Question

What is the measure of efg if efh=111?

Answer 1

43°

Explanation:

∠EFG+∠GFH=∠EFH

1. So (3x-20)+(3x+5)=111.
2. You don't need the parenthesis, 3x-20+3x+5=111
3. Combine like terms, 6x-15=111
4. Add 15, 126
5. Divide by 6 to isolate the variable, x=21

∠EFG is (3x-20) and we know x is 21. 3(21)-20=63-20=43.